28115935232 has 336 divisors, whose sum is σ = 73973570112. Its totient is φ = 10376970240.

The previous prime is 28115935223. The next prime is 28115935247. The reversal of 28115935232 is 23253951182.

It is a self number, because there is not a number n which added to its sum of digits gives 28115935232.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 530489318 + ... + 530489370.

Almost surely, 2^28115935232 is an apocalyptic number.

28115935232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28115935232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36986785056).

28115935232 is an abundant number, since it is smaller than the sum of its proper divisors (45857634880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28115935232 is an equidigital number, since it uses as much as digits as its factorization.

28115935232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 102 counting only the distinct ones).

The product of its digits is 129600, while the sum is 41.

The spelling of 28115935232 in words is "twenty-eight billion, one hundred fifteen million, nine hundred thirty-five thousand, two hundred thirty-two".